﻿#region License

// PentaBiz - Sustainable Software Development Framework Copyright (C) 2013 Zoltán Csizmazia
// 
// This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
// 
// This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 

#endregion

using System.ComponentModel;
using System.Runtime.CompilerServices;
using PentaBiz.Cloud.Services;
using PentaBiz.Cloud.Services.DynamicService;

namespace PentaBiz.Studio.Plugins.DynamicServer.Services
{
    public class DynamicServiceManagerPluginService : PluginService, INotifyPropertyChanged
    {
        private static volatile DynamicServiceManager DynamicServiceManager;

        public static readonly DynamicServiceManagerPluginService Instance = new DynamicServiceManagerPluginService();
        private static readonly object _DynamicServiceManagerLock = new object();
        public event PropertyChangedEventHandler PropertyChanged;

        public DynamicServiceManager GetDynamicServiceManager()
        {
            if (DynamicServiceManager == null)
            {
                lock (_DynamicServiceManagerLock)
                {
                    if (DynamicServiceManager == null)
                    {
                        return DynamicServiceManager = new DynamicServiceManager();
                    }
                }
            }

            return DynamicServiceManager;
        }

        protected override void OnStart()
        {
        }

        protected override void OnStop()
        {
            GetDynamicServiceManager().UnloadAllDeployedMetaChangeSets();
        }

        protected override void OnRestart()
        {
            GetDynamicServiceManager().UnloadAllDeployedMetaChangeSets();
        }

        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
        {
            PropertyChangedEventHandler handler = PropertyChanged;
            if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}